treewide: replace '---help---' in Kconfig files with 'help'

Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

  a) 4 spaces + '---help---'
  b) 7 spaces + '---help---'
  c) 8 spaces + '---help---'
  d) 1 space + 1 tab + '---help---'
  e) 1 tab + '---help---'    (correct indentation)
  f) 1 tab + 1 space + '---help---'
  g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

  $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
diff --git a/net/caif/Kconfig b/net/caif/Kconfig
index b7532a7..8720525 100644
--- a/net/caif/Kconfig
+++ b/net/caif/Kconfig
@@ -7,7 +7,7 @@
 	tristate "CAIF support"
 	select CRC_CCITT
 	default n
-	---help---
+	help
 	The "Communication CPU to Application CPU Interface" (CAIF) is a packet
 	based connection-oriented MUX protocol developed by ST-Ericsson for use
 	with its modems. It is accessed from user space as sockets (PF_CAIF).
@@ -26,7 +26,7 @@
 	bool "Enable Debug"
 	depends on CAIF
 	default n
-	---help---
+	help
 	Enable the inclusion of debug code in the CAIF stack.
 	Be aware that doing this will impact performance.
 	If unsure say N.
@@ -35,7 +35,7 @@
 	tristate "CAIF GPRS Network device"
 	depends on CAIF
 	default CAIF
-	---help---
+	help
 	Say Y if you will be using a CAIF based GPRS network device.
 	This can be either built-in or a loadable module.
 	If you select to build it as a built-in then the main CAIF device must
@@ -46,7 +46,7 @@
 	tristate "CAIF USB support"
 	depends on CAIF
 	default n
-	---help---
+	help
 	Say Y if you are using CAIF over USB CDC NCM.
 	This can be either built-in or a loadable module.
 	If you select to build it as a built-in then the main CAIF device must